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* @packageDocumentation
*
* Acceptance-test helper for the editor core. Simulates user-level
* interactions (hover, zoom, scroll) and provides readable assertions
* against the EditorController state.
*/
import { expect } from "vite-plus/test";
import {
EditorController,
CHART,
ViewportSlice,
SelectionSlice,
ChartSlice,
ColumnsSlice,
} from "./index";
import type { ProjectFile } from "../project-format";
import { type Entity, EntityBuilder, entity } from "../entity-manager";
import { createDemoProjectFile } from "../project-store";
export { entity };
import { EVENT, BPM_CHANGE, TIME_SIGNATURE, CHART_REF, NOTE, LEVEL_REF, LEVEL } from "./components";
import { Rect, type Point as PointType } from "../geometry";
export class ChartBuilder {
private chartId: string;
private projectBuilder: ProjectBuilder;
constructor(chartId: string, projectBuilder: ProjectBuilder) {
this.chartId = chartId;
this.projectBuilder = projectBuilder;
}
private addWithChartRef(build: (e: EntityBuilder) => void): Entity {
const ent = entity((e) => {
build(e);
e.with(CHART_REF, { chartId: this.chartId });
});
this.projectBuilder.add(ent);
return ent;
}
addEntity(callback: (e: EntityBuilder) => void): Entity {
return this.addWithChartRef(callback);
}
bpmChange(y: number, bpm: number): Entity {
return this.addWithChartRef((e) => e.with(EVENT, { y }).with(BPM_CHANGE, { bpm }));
}
timeSignature(y: number, numerator: number, denominator: number): Entity {
return this.addWithChartRef((e) =>
e.with(EVENT, { y }).with(TIME_SIGNATURE, { numerator, denominator }),
);
}
note(y: number, lane: number, levelId: string): Entity {
return this.addWithChartRef((e) =>
e.with(EVENT, { y }).with(NOTE, { lane }).with(LEVEL_REF, { levelId }),
);
}
}
export class ProjectBuilder {
private entities: Entity[] = [];
add(entity: Entity): Entity {
this.entities.push(entity);
return entity;
}
addEntity(callback: (e: EntityBuilder) => void): Entity {
const ent = entity(callback);
this.add(ent);
return ent;
}
addChart(name: string, callback?: (c: ChartBuilder) => void, size?: number): Entity {
const chart = entity((e) => e.with(CHART, { name, size }));
this.add(chart);
if (callback) {
callback(new ChartBuilder(chart.id, this));
}
return chart;
}
addLevel(chartId: string, name: string, mode: string, sortOrder?: number): Entity {
const level = entity((e) =>
e.with(LEVEL, { name, mode, sortOrder: sortOrder ?? 0 }).with(CHART_REF, { chartId }),
);
this.add(level);
return level;
}
build(): ProjectFile {
return {
schemaVersion: 2,
version: "test-version",
metadata: { title: "Test", artist: "Test", genre: "Test" },
entities: this.entities,
};
}
}
export function makeProject(
entitiesOrCallback: Entity[] | ((p: ProjectBuilder) => void) = [],
): ProjectFile {
if (Array.isArray(entitiesOrCallback)) {
return {
schemaVersion: 2,
version: "test-version",
metadata: { title: "Test", artist: "Test", genre: "Test" },
entities: entitiesOrCallback,
};
}
const builder = new ProjectBuilder();
entitiesOrCallback(builder);
return builder.build();
}
export class EditorTester {
readonly instance: EditorController;
constructor(options?: {
getProjectToLoad?: () => ProjectFile;
viewport?: { width: number; height: number };
}) {
const project = options?.getProjectToLoad?.() ?? createDemoProjectFile();
this.instance = new EditorController({ project });
const viewportWidth = options?.viewport?.width ?? 640;
const viewportHeight = options?.viewport?.height ?? 480;
this.instance.setViewportSize(viewportWidth, viewportHeight);
// Subscribe to outbox so scroll notifications (e.g. from onConnected or
// setZoom) are applied, closing the loop just like the real DOM does.
this.instance.outbox.on("setScroll", (point) => {
this.instance.setScroll(point);
});
this.instance.onConnected();
}
pointerMove({ x, y }: { x?: number; y: number }) {
this.instance.handlePointerMove(x ?? 0, y);
}
setTool(tool: "select" | "pencil" | "erase" | "pan") {
this.instance.setTool(tool);
}
pointerDown(point: PointType, options?: { shiftKey?: boolean }) {
this.instance.handlePointerDown(point, options?.shiftKey ?? false);
}
pointerUp() {
this.instance.handlePointerUp();
}
eventRect(entityId: string): Rect {
const specs = this.instance.$visibleRenderObjects.get();
const spec = specs.find((s) => s.key.endsWith(`-${entityId}`));
expect(spec).toBeDefined();
return { x: spec!.x, y: spec!.y, width: spec!.width, height: spec!.height };
}
zoom(value: number) {
this.instance.setZoom(value);
}
scrollTo(point: PointType) {
this.instance.setScroll(point);
}
deleteSelection() {
this.instance.deleteSelection();
}
undo() {
this.instance.undo();
}
redo() {
this.instance.redo();
}
navigateUp() {
this.instance.navigateSnap("up");
}
navigateDown() {
this.instance.navigateSnap("down");
}
get scrollHeight() {
return this.instance.getContentHeight();
}
get scrollTop() {
return this.instance.ctx.get(ViewportSlice).$scroll.get().y;
}
selection = {
shouldContain: (id: string) => {
expect(this.instance.ctx.get(SelectionSlice).$selection.get().has(id)).toBe(true);
},
shouldBeEmpty: () => {
expect(this.instance.ctx.get(SelectionSlice).$selection.get().size).toBe(0);
},
};
playhead = {
shouldBeAtPulse: (expected: number) => {
expect(this.instance.$cursorPulse.get()).toBe(expected);
},
shouldBeAtTime: (expected: string) => {
const engine = this.instance.getTimingEngine();
const seconds = engine.pulseToSeconds(this.instance.$cursorPulse.get());
expect(engine.formatTime(seconds)).toBe(expected);
},
shouldHavePositionRelativeToViewport: (expectedY: number) => {
const specs = this.instance.$visibleRenderObjects.get();
const playhead = specs.find((s) => s.type === "playhead");
expect(playhead).toBeDefined();
const playheadViewportY = playhead!.y - this.instance.ctx.get(ViewportSlice).$scroll.get().y;
expect(playheadViewportY).toBe(expectedY);
},
};
chart = {
shouldHaveName: (expected: string) => {
const chart = this.instance.ctx.get(ChartSlice).getSelectedChart();
expect(chart).toBeDefined();
const component = this.instance.getEntityManager().getComponent(chart!, CHART);
expect(component?.name).toBe(expected);
},
shouldHaveSize: (expected: number) => {
expect(this.instance.ctx.get(ChartSlice).getChartSize()).toBe(expected);
},
};
timing = {
shouldHaveMeasureBoundaries: (range: { start: number; end: number }, expected: number[]) => {
const engine = this.instance.getTimingEngine();
const boundaries = engine.getMeasureBoundaries(range);
expect(boundaries).toEqual(expected);
},
atPulse: (pulse: number) => ({
shouldBeAtTime: (expected: string) => {
const engine = this.instance.getTimingEngine();
const seconds = engine.pulseToSeconds(pulse);
expect(engine.formatTime(seconds)).toBe(expected);
},
}),
};
get columns() {
const instance = this.instance;
return {
get count() {
return instance.ctx.get(ColumnsSlice).$columns.get().length;
},
shouldHaveCount: (expected: number) => {
expect(instance.ctx.get(ColumnsSlice).$columns.get().length).toBe(expected);
},
shouldHaveTotalWidth: (expected: number) => {
expect(instance.getTimelineWidth()).toBe(expected);
},
at: (index: number) => ({
shouldMatch: (expected: Partial<{ id: string; x: number; width: number }>) => {
const col = instance.ctx.get(ColumnsSlice).$columns.get()[index];
expect(col).toBeDefined();
expect(col).toMatchObject(expected);
},
}),
};
}
}
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